331 lines
13 KiB
Python
331 lines
13 KiB
Python
"""
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Mappings from VT100 (ANSI) escape sequences to the corresponding prompt_toolkit
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keys.
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We are not using the terminfo/termcap databases to detect the ANSI escape
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sequences for the input. Instead, we recognize 99% of the most common
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sequences. This works well, because in practice, every modern terminal is
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mostly Xterm compatible.
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Some useful docs:
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- Mintty: https://github.com/mintty/mintty/blob/master/wiki/Keycodes.md
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"""
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from typing import Dict, Tuple, Union
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from ..keys import Keys
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__all__ = [
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"ANSI_SEQUENCES",
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"REVERSE_ANSI_SEQUENCES",
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]
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# Mapping of vt100 escape codes to Keys.
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ANSI_SEQUENCES: Dict[str, Union[Keys, Tuple[Keys, ...]]] = {
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# Control keys.
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"\x00": Keys.ControlAt, # Control-At (Also for Ctrl-Space)
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"\x01": Keys.ControlA, # Control-A (home)
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"\x02": Keys.ControlB, # Control-B (emacs cursor left)
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"\x03": Keys.ControlC, # Control-C (interrupt)
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"\x04": Keys.ControlD, # Control-D (exit)
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"\x05": Keys.ControlE, # Control-E (end)
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"\x06": Keys.ControlF, # Control-F (cursor forward)
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"\x07": Keys.ControlG, # Control-G
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"\x08": Keys.ControlH, # Control-H (8) (Identical to '\b')
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"\x09": Keys.ControlI, # Control-I (9) (Identical to '\t')
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"\x0a": Keys.ControlJ, # Control-J (10) (Identical to '\n')
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"\x0b": Keys.ControlK, # Control-K (delete until end of line; vertical tab)
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"\x0c": Keys.ControlL, # Control-L (clear; form feed)
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"\x0d": Keys.ControlM, # Control-M (13) (Identical to '\r')
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"\x0e": Keys.ControlN, # Control-N (14) (history forward)
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"\x0f": Keys.ControlO, # Control-O (15)
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"\x10": Keys.ControlP, # Control-P (16) (history back)
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"\x11": Keys.ControlQ, # Control-Q
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"\x12": Keys.ControlR, # Control-R (18) (reverse search)
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"\x13": Keys.ControlS, # Control-S (19) (forward search)
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"\x14": Keys.ControlT, # Control-T
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"\x15": Keys.ControlU, # Control-U
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"\x16": Keys.ControlV, # Control-V
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"\x17": Keys.ControlW, # Control-W
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"\x18": Keys.ControlX, # Control-X
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"\x19": Keys.ControlY, # Control-Y (25)
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"\x1a": Keys.ControlZ, # Control-Z
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"\x1b": Keys.Escape, # Also Control-[
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"\x9b": Keys.ShiftEscape,
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"\x1c": Keys.ControlBackslash, # Both Control-\ (also Ctrl-| )
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"\x1d": Keys.ControlSquareClose, # Control-]
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"\x1e": Keys.ControlCircumflex, # Control-^
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"\x1f": Keys.ControlUnderscore, # Control-underscore (Also for Ctrl-hyphen.)
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# ASCII Delete (0x7f)
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# Vt220 (and Linux terminal) send this when pressing backspace. We map this
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# to ControlH, because that will make it easier to create key bindings that
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# work everywhere, with the trade-off that it's no longer possible to
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# handle backspace and control-h individually for the few terminals that
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# support it. (Most terminals send ControlH when backspace is pressed.)
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# See: http://www.ibb.net/~anne/keyboard.html
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"\x7f": Keys.ControlH,
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# --
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# Various
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"\x1b[1~": Keys.Home, # tmux
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"\x1b[2~": Keys.Insert,
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"\x1b[3~": Keys.Delete,
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"\x1b[4~": Keys.End, # tmux
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"\x1b[5~": Keys.PageUp,
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"\x1b[6~": Keys.PageDown,
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"\x1b[7~": Keys.Home, # xrvt
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"\x1b[8~": Keys.End, # xrvt
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"\x1b[Z": Keys.BackTab, # shift + tab
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# --
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# Function keys.
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"\x1bOP": Keys.F1,
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"\x1bOQ": Keys.F2,
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"\x1bOR": Keys.F3,
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"\x1bOS": Keys.F4,
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"\x1b[[A": Keys.F1, # Linux console.
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"\x1b[[B": Keys.F2, # Linux console.
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"\x1b[[C": Keys.F3, # Linux console.
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"\x1b[[D": Keys.F4, # Linux console.
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"\x1b[[E": Keys.F5, # Linux console.
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"\x1b[11~": Keys.F1, # rxvt-unicode
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"\x1b[12~": Keys.F2, # rxvt-unicode
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"\x1b[13~": Keys.F3, # rxvt-unicode
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"\x1b[14~": Keys.F4, # rxvt-unicode
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"\x1b[15~": Keys.F5,
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"\x1b[17~": Keys.F6,
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"\x1b[18~": Keys.F7,
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"\x1b[19~": Keys.F8,
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"\x1b[20~": Keys.F9,
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"\x1b[21~": Keys.F10,
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"\x1b[23~": Keys.F11,
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"\x1b[24~": Keys.F12,
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"\x1b[25~": Keys.F13,
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"\x1b[26~": Keys.F14,
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"\x1b[28~": Keys.F15,
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"\x1b[29~": Keys.F16,
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"\x1b[31~": Keys.F17,
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"\x1b[32~": Keys.F18,
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"\x1b[33~": Keys.F19,
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"\x1b[34~": Keys.F20,
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# Xterm
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"\x1b[1;2P": Keys.F13,
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"\x1b[1;2Q": Keys.F14,
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# '\x1b[1;2R': Keys.F15, # Conflicts with CPR response.
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"\x1b[1;2S": Keys.F16,
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"\x1b[15;2~": Keys.F17,
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"\x1b[17;2~": Keys.F18,
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"\x1b[18;2~": Keys.F19,
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"\x1b[19;2~": Keys.F20,
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"\x1b[20;2~": Keys.F21,
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"\x1b[21;2~": Keys.F22,
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"\x1b[23;2~": Keys.F23,
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"\x1b[24;2~": Keys.F24,
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# --
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# Control + function keys.
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"\x1b[1;5P": Keys.ControlF1,
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"\x1b[1;5Q": Keys.ControlF2,
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# "\x1b[1;5R": Keys.ControlF3, # Conflicts with CPR response.
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"\x1b[1;5S": Keys.ControlF4,
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"\x1b[15;5~": Keys.ControlF5,
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"\x1b[17;5~": Keys.ControlF6,
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"\x1b[18;5~": Keys.ControlF7,
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"\x1b[19;5~": Keys.ControlF8,
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"\x1b[20;5~": Keys.ControlF9,
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"\x1b[21;5~": Keys.ControlF10,
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"\x1b[23;5~": Keys.ControlF11,
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"\x1b[24;5~": Keys.ControlF12,
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"\x1b[1;6P": Keys.ControlF13,
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"\x1b[1;6Q": Keys.ControlF14,
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# "\x1b[1;6R": Keys.ControlF15, # Conflicts with CPR response.
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"\x1b[1;6S": Keys.ControlF16,
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"\x1b[15;6~": Keys.ControlF17,
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"\x1b[17;6~": Keys.ControlF18,
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"\x1b[18;6~": Keys.ControlF19,
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"\x1b[19;6~": Keys.ControlF20,
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"\x1b[20;6~": Keys.ControlF21,
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"\x1b[21;6~": Keys.ControlF22,
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"\x1b[23;6~": Keys.ControlF23,
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"\x1b[24;6~": Keys.ControlF24,
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# --
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# Tmux (Win32 subsystem) sends the following scroll events.
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"\x1b[62~": Keys.ScrollUp,
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"\x1b[63~": Keys.ScrollDown,
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"\x1b[200~": Keys.BracketedPaste, # Start of bracketed paste.
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# --
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# Sequences generated by numpad 5. Not sure what it means. (It doesn't
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# appear in 'infocmp'. Just ignore.
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"\x1b[E": Keys.Ignore, # Xterm.
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"\x1b[G": Keys.Ignore, # Linux console.
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# --
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# Meta/control/escape + pageup/pagedown/insert/delete.
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"\x1b[3;2~": Keys.ShiftDelete, # xterm, gnome-terminal.
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"\x1b[5;2~": Keys.ShiftPageUp,
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"\x1b[6;2~": Keys.ShiftPageDown,
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"\x1b[2;3~": (Keys.Escape, Keys.Insert),
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"\x1b[3;3~": (Keys.Escape, Keys.Delete),
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"\x1b[5;3~": (Keys.Escape, Keys.PageUp),
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"\x1b[6;3~": (Keys.Escape, Keys.PageDown),
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"\x1b[2;4~": (Keys.Escape, Keys.ShiftInsert),
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"\x1b[3;4~": (Keys.Escape, Keys.ShiftDelete),
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"\x1b[5;4~": (Keys.Escape, Keys.ShiftPageUp),
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"\x1b[6;4~": (Keys.Escape, Keys.ShiftPageDown),
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"\x1b[3;5~": Keys.ControlDelete, # xterm, gnome-terminal.
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"\x1b[5;5~": Keys.ControlPageUp,
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"\x1b[6;5~": Keys.ControlPageDown,
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"\x1b[3;6~": Keys.ControlShiftDelete,
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"\x1b[5;6~": Keys.ControlShiftPageUp,
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"\x1b[6;6~": Keys.ControlShiftPageDown,
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"\x1b[2;7~": (Keys.Escape, Keys.ControlInsert),
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"\x1b[5;7~": (Keys.Escape, Keys.ControlPageDown),
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"\x1b[6;7~": (Keys.Escape, Keys.ControlPageDown),
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"\x1b[2;8~": (Keys.Escape, Keys.ControlShiftInsert),
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"\x1b[5;8~": (Keys.Escape, Keys.ControlShiftPageDown),
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"\x1b[6;8~": (Keys.Escape, Keys.ControlShiftPageDown),
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# --
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# Arrows.
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"\x1b[A": Keys.Up,
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"\x1b[B": Keys.Down,
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"\x1b[C": Keys.Right,
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"\x1b[D": Keys.Left,
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"\x1b[H": Keys.Home,
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"\x1b[F": Keys.End,
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# Tmux sends following keystrokes when control+arrow is pressed, but for
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# Emacs ansi-term sends the same sequences for normal arrow keys. Consider
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# it a normal arrow press, because that's more important.
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"\x1bOA": Keys.Up,
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"\x1bOB": Keys.Down,
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"\x1bOC": Keys.Right,
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"\x1bOD": Keys.Left,
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"\x1bOF": Keys.End,
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"\x1bOH": Keys.Home,
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# Shift + arrows.
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"\x1b[1;2A": Keys.ShiftUp,
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"\x1b[1;2B": Keys.ShiftDown,
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"\x1b[1;2C": Keys.ShiftRight,
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"\x1b[1;2D": Keys.ShiftLeft,
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"\x1b[1;2F": Keys.ShiftEnd,
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"\x1b[1;2H": Keys.ShiftHome,
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# Meta + arrow keys. Several terminals handle this differently.
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# The following sequences are for xterm and gnome-terminal.
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# (Iterm sends ESC followed by the normal arrow_up/down/left/right
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# sequences, and the OSX Terminal sends ESCb and ESCf for "alt
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# arrow_left" and "alt arrow_right." We don't handle these
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# explicitly, in here, because would could not distinguish between
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# pressing ESC (to go to Vi navigation mode), followed by just the
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# 'b' or 'f' key. These combinations are handled in
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# the input processor.)
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"\x1b[1;3A": (Keys.Escape, Keys.Up),
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"\x1b[1;3B": (Keys.Escape, Keys.Down),
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"\x1b[1;3C": (Keys.Escape, Keys.Right),
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"\x1b[1;3D": (Keys.Escape, Keys.Left),
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"\x1b[1;3F": (Keys.Escape, Keys.End),
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"\x1b[1;3H": (Keys.Escape, Keys.Home),
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# Alt+shift+number.
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"\x1b[1;4A": (Keys.Escape, Keys.ShiftDown),
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"\x1b[1;4B": (Keys.Escape, Keys.ShiftUp),
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"\x1b[1;4C": (Keys.Escape, Keys.ShiftRight),
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"\x1b[1;4D": (Keys.Escape, Keys.ShiftLeft),
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"\x1b[1;4F": (Keys.Escape, Keys.ShiftEnd),
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"\x1b[1;4H": (Keys.Escape, Keys.ShiftHome),
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# Control + arrows.
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"\x1b[1;5A": Keys.ControlUp, # Cursor Mode
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"\x1b[1;5B": Keys.ControlDown, # Cursor Mode
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"\x1b[1;5C": Keys.ControlRight, # Cursor Mode
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"\x1b[1;5D": Keys.ControlLeft, # Cursor Mode
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"\x1b[1;5F": Keys.ControlEnd,
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"\x1b[1;5H": Keys.ControlHome,
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# Tmux sends following keystrokes when control+arrow is pressed, but for
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# Emacs ansi-term sends the same sequences for normal arrow keys. Consider
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# it a normal arrow press, because that's more important.
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"\x1b[5A": Keys.ControlUp,
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"\x1b[5B": Keys.ControlDown,
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"\x1b[5C": Keys.ControlRight,
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"\x1b[5D": Keys.ControlLeft,
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"\x1bOc": Keys.ControlRight, # rxvt
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"\x1bOd": Keys.ControlLeft, # rxvt
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# Control + shift + arrows.
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"\x1b[1;6A": Keys.ControlShiftDown,
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"\x1b[1;6B": Keys.ControlShiftUp,
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"\x1b[1;6C": Keys.ControlShiftRight,
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"\x1b[1;6D": Keys.ControlShiftLeft,
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"\x1b[1;6F": Keys.ControlShiftEnd,
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"\x1b[1;6H": Keys.ControlShiftHome,
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# Control + Meta + arrows.
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"\x1b[1;7A": (Keys.Escape, Keys.ControlDown),
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"\x1b[1;7B": (Keys.Escape, Keys.ControlUp),
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"\x1b[1;7C": (Keys.Escape, Keys.ControlRight),
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"\x1b[1;7D": (Keys.Escape, Keys.ControlLeft),
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"\x1b[1;7F": (Keys.Escape, Keys.ControlEnd),
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"\x1b[1;7H": (Keys.Escape, Keys.ControlHome),
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# Meta + Shift + arrows.
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"\x1b[1;8A": (Keys.Escape, Keys.ControlShiftDown),
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"\x1b[1;8B": (Keys.Escape, Keys.ControlShiftUp),
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"\x1b[1;8C": (Keys.Escape, Keys.ControlShiftRight),
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"\x1b[1;8D": (Keys.Escape, Keys.ControlShiftLeft),
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"\x1b[1;8F": (Keys.Escape, Keys.ControlShiftEnd),
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"\x1b[1;8H": (Keys.Escape, Keys.ControlShiftHome),
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# Meta + arrow on (some?) Macs when using iTerm defaults (see issue #483).
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"\x1b[1;9A": (Keys.Escape, Keys.Up),
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"\x1b[1;9B": (Keys.Escape, Keys.Down),
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"\x1b[1;9C": (Keys.Escape, Keys.Right),
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"\x1b[1;9D": (Keys.Escape, Keys.Left),
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# --
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# Control/shift/meta + number in mintty.
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# (c-2 will actually send c-@ and c-6 will send c-^.)
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"\x1b[1;5p": Keys.Control0,
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"\x1b[1;5q": Keys.Control1,
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"\x1b[1;5r": Keys.Control2,
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"\x1b[1;5s": Keys.Control3,
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"\x1b[1;5t": Keys.Control4,
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"\x1b[1;5u": Keys.Control5,
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"\x1b[1;5v": Keys.Control6,
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"\x1b[1;5w": Keys.Control7,
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"\x1b[1;5x": Keys.Control8,
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"\x1b[1;5y": Keys.Control9,
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"\x1b[1;6p": Keys.ControlShift0,
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"\x1b[1;6q": Keys.ControlShift1,
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"\x1b[1;6r": Keys.ControlShift2,
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"\x1b[1;6s": Keys.ControlShift3,
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"\x1b[1;6t": Keys.ControlShift4,
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"\x1b[1;6u": Keys.ControlShift5,
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"\x1b[1;6v": Keys.ControlShift6,
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"\x1b[1;6w": Keys.ControlShift7,
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"\x1b[1;6x": Keys.ControlShift8,
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"\x1b[1;6y": Keys.ControlShift9,
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"\x1b[1;7p": (Keys.Escape, Keys.Control0),
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"\x1b[1;7q": (Keys.Escape, Keys.Control1),
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"\x1b[1;7r": (Keys.Escape, Keys.Control2),
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"\x1b[1;7s": (Keys.Escape, Keys.Control3),
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"\x1b[1;7t": (Keys.Escape, Keys.Control4),
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"\x1b[1;7u": (Keys.Escape, Keys.Control5),
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"\x1b[1;7v": (Keys.Escape, Keys.Control6),
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"\x1b[1;7w": (Keys.Escape, Keys.Control7),
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"\x1b[1;7x": (Keys.Escape, Keys.Control8),
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"\x1b[1;7y": (Keys.Escape, Keys.Control9),
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"\x1b[1;8p": (Keys.Escape, Keys.ControlShift0),
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"\x1b[1;8q": (Keys.Escape, Keys.ControlShift1),
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"\x1b[1;8r": (Keys.Escape, Keys.ControlShift2),
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"\x1b[1;8s": (Keys.Escape, Keys.ControlShift3),
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"\x1b[1;8t": (Keys.Escape, Keys.ControlShift4),
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"\x1b[1;8u": (Keys.Escape, Keys.ControlShift5),
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"\x1b[1;8v": (Keys.Escape, Keys.ControlShift6),
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"\x1b[1;8w": (Keys.Escape, Keys.ControlShift7),
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"\x1b[1;8x": (Keys.Escape, Keys.ControlShift8),
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"\x1b[1;8y": (Keys.Escape, Keys.ControlShift9),
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}
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def _get_reverse_ansi_sequences() -> Dict[Keys, str]:
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"""
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Create a dictionary that maps prompt_toolkit keys back to the VT100 escape
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sequences.
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"""
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result: Dict[Keys, str] = {}
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for sequence, key in ANSI_SEQUENCES.items():
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if not isinstance(key, tuple):
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if key not in result:
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result[key] = sequence
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return result
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REVERSE_ANSI_SEQUENCES = _get_reverse_ansi_sequences()
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